"That evolution has withstood time is
merely an indication of how powerful an explanation it really is."

How about the fact that for nearly all scientists (those who insist on solely natural mechanisms) it's the only game in town? Even if the theory were quite weak (which in several respects it is not), you'd do everything in your power to support it if you had no alternative but the supernatural, the possibility of which you as scientist cannot or will not or should not ( ? ) entertain. So there's definitely a strong bias in play. Under the circumstances, what conceivable alternative could persuade scientists to abandon it?